Form for concrete walls



Patented Sept. 6, 1921.

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ERICE Tnooniiv, `or Brennan, iaiivtiiisotra.l y f assente.

rrppnca'aony ined ruiy 29, i920. serial are.

To all 107mm t mayV concern:

Be it known that l, Enron TnooLiN, a citi* Zen of the United States,lresiding at Braham, in the county of lsanti and State of Minnesota, haveinvented certain new and useful improvements in Forms for Concrete`Walls; and I do hereby declare the following to be a full, clear, andexact description of the invention, 'such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its kobject to provide an extremely simple andhighly efficient form foiiuse in constructing concrete Walls with one ormore air'spa'ces, and to this end,

^ it lconsistsof the novel devices and combinations of deviceshereinafter described and 'defined win Jche claims.

of one ofthe latches used in connecting and alining abutting Wall plates'of adjacent forms; v

Fig. 4 is a fragmentary perspective View of one of the forms; n

Fig. 5 is a transverse section taken through a Wall and one of 'theforms; and

Fig. 6 is a fragmentary perspective view of the Wall with improved formsremoved.

The improved form, as shown, comprises a pair of overlapping bars 7 and8, a feed device 9, cooperating pairs of laterally spaced inner, outerand intermediate Wall plates l0 alternately secured to the bars 7 and 8by hanger bars ll. The bars 7 and 8 are held, by collars 12, inassembled relation with freedom for endivise sliding movement, thelatter on the former, under the action of the feed device 9, which, asshown, is in the form of a screw rod having at one end a hand crank 13,by Which it may be operated. This feed screw 9 is journaled in a bearing14 on the bar 7 and has screvv-threaded engagement with a nut block l5on the bar 8. A pair of collars 16 and 17, secured 'to the feed screw 9,is arranged to engage opposite sonia ron concentra warms.

Specication 0f LettersrPatent.

the feed screw 9;

1 I Patenten sept. ainsi.

`'facesof the bearing `le: to holdsaid feed scre'iv :againstendtvisemovement.'v As shown, thecollar 17 is yof vsuch le'ngthas `to be engaged'by the knut block l5 as a stop to limit the endvvise mov'ementof thebar 8 toward 'The hanger bars 11, which, as shovvnyare in the form ofangles., have their upper ends flattened to affordhe'ads 18, througheach of f vwhich is. inserted a pair of screws 19 that havescrew-threaded engagement with bores 20 in `the outer faces of thetWobars V7 and 8 to detachably secure said hanger bars thereto. vlt isimportant to note that there .is aV plurality-of bores 2O longitudinallyspaced `to permit adjustment offone `of the hanger bars 11 of feach pairtoward and from the yother thereof. The Wall plates l0, which' are.preferably formed from sheet metal, are rigidly secured to thevopposing faces of the vhanger jbars 1l, and lin addition "to thesehanger lbars 11, ithe Wall plates'lQ are reinforced, on outer marginaledge portions, by

'means of `angle bars'2l. The Wall plates l0 l are further re-inforced,`at intermediate points, by upright `anglefor T-bars 22. The

`opposing faces of each `pair of Wall plates 10 may be perfectly smooth,or, as shown, they may be pressed both longitudinally and vertically toform ribs arranged to leave impressions in a Wall to represent bricks.

Y To the lovver edge of each ivall plate 10 visfrigidly secured an anglebar to aiford a clam'ping flange 23, the vertical Web of Which is uflushWith theinner face of the respective wall plate to aorda depending eX-tension thereof. These clampingl ianges 23 4 are preferably notched at24 for a purpose that will presently appear. On the upper longitudinaledge of each Wall rigidly secured an angle bar `to afford a retainingflange 25, the vertical iange of" Which is turned outward, or, Ain otherWords, is laterally offset from the inner face of the respective Wallplate.

In Fig. l, the Wall plates l() are in the plate 10 is form of angleswith a pair of the hars 7 and 8 extended .directly over the apeXesthereof, and which Wall plates are alternately secured thereto anddesigned to form a corner of a Wall having a double air space.` The Wallplates 10, shown inFig. 2, are straight throughout their entire lengthand designed to forni a Wall with a double air space, and which Wallplates are connected? i lthe Iforms are left a sufficient length of time-Y to permit the cement to set.

neartheir ends in parallel arrangement, by two lpairs of the bars 7 and8. Abutting wall plates, of adjacent forms, are connected and alined bylatches 26 pivoted to the retaining flanges, 24: and having bifurcatedabutting ends 'of heads arranged Vto overla said flanges, as shown inllafig. 3. ,n

In constructing a concrete wall by the use of my improved forms, afoundation XV is preferablypoured, on whichsaid .forms are placed `afterthe wall plates have been ad# justed, by shifting the hanger bars'fll on`.the bars 7 and- 8, to give the desired thickness to the severalsections of the wall and the desired width to the air spaces.

After the first course of the wall is poured,

Said, forms are then removed fromthe formed section of the wallbyoperating the cranks 13 to impart lateral'movementto one of the sideplates l() of each pair and thereby increase the width between thewallplates to separate the same from the formed wall. This movement ofthe cranks 13 may be very slow, so as to not` crackV or vbreak thecement when removing thewall plates therefrom. The released forms arethen lifted and'cross tie-rodsZ placedv on the formed. sections ofthewall to f Vnotonlytie the sections of the wall together,

but suppor'tthe formswhil'e an additional tier of cement is poured,as'shown in Fig. 5'. The notches 24, in the clamping flanges 23,

are arranged to receive the rods Z and thereby permit said flanges tooverlap the sides of the wall sections. The cranks 13 are thenoperated-to draw the wallv plates Yl0 toward each other and clamp theyflanges 23 ont-o saidwall sections. `Cement is then poured in the formsfor theneXt tier in the wall,

andV so on', until the wall is complete. The

Vin presence of twoV retaining flanges 24 prevent cement, as the same ispoured into the forms, fromvrunning over the top of the side walls 10.

By the use of my, improved form, alwall may beformed'with a continuousair space,

which extends the full height and length thereof as well as around thecorner ofthe Wall. lf it is desired to form a wall with;

a single air space, one pair of wall plates l0 may bedetached from thebars 7 and 8'.V

The above described invention, while eX- tremely simple and cost tomanufacture, is thought to be highly efficient for the purpose had inview.

N hat l claim is:

l. VA form for concrete walls having in combination two rectangularvbars disposed with their long sides vertical and contacting,

and straps embracing and securing said bars together a bearin secured attheend of one bar, a' Vscrew rod journaled in said bearing, a longcollar at oneside of said'bearing and ashort collar atthe other sidethereof, said collars being securedgto said rodrv and a nut ofcomparatively small Y collar engaging said rod secured to the other bar,said long collar forming a stop for said nut collar and spaced platesdepending from and' alternately secured to said bars.

2. A form for concrete walls 'having in combination `two rectangular/bars disposed vsideby side with their long axes vertical and securedtogether for relative longitudinal movement, a plurality of'spaced angleplates depending therefrom and having extensions alternately securedthereto at the sides thereof, plates secured tojsaid. angle plates andextending therebetween normal' to said bars, a pair of oppositelyarranged angles .secured together and to said plates along ERICKTROOLIN. Witnesses: p

.OSCAR A. OLsoivg Y ANNA MCCORMACK

